In Johnson County there is 1 residential Cable provider covering 89.07% of the county. The average home can get speeds up to 1,000 Mbps. Note that we may have a financial relationship with some of the providers below. This does not influence rankings, and helps us provide high-quality detailed information for free.
This page contains all Cable internet providers in Johnson County, IA.
To see availability maps for all providers including fiber, cable, DSL, and more in Johnson County, IA please click below.
Johnson County, IA Availability Maps
Cable Internet Service Provider in Johnson County
Data updated 11/14/2025, based on FCC data from 12/31/2024. This is the most current data available as of .
To avoid wasting your time, providers with less than 1% coverage in Johnson County are not shown.
Johnson County Satellite TV & Internet Providers
DISH Satellite TV
DIRECTV Satellite TV
Not sure whether to choose Dish or DIRECTV? For most people most of the time we recommend DISH. But click here to learn more.
Viasat Satellite Internet
Where in Johnson County is cable internet available?
Cable Internet Availability Key
Cable is available in 89.07% of Johnson County. Areas in green have cable internet service, where areas in yellow or red may not. The most widely available provider is Mediacom. Call one of the companies with service in Johnson County above to see who has service at your home.
How fast is cable internet in Johnson County?
The map below shows maximum cable internet speeds by area in Johnson County.
Cable Internet Speed Key
The average Johnson County home can get up to 1,000 Mbps on their cable internet plan. The fastest cable download speed in the county is 1,000 Mbps, which 89.07% of residents can get.
Is cable the fastest internet I can get in Johnson County?
The fastest internet for you may vary based on where in Johnson County you live. In general, fiber competes most often with cable in the county.
- Fiber is the fastest internet type for 74.25% of Johnson County homes.
- Cable is fastest for 20.20% of the county.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 1.55%.
- Satellite internet may be the only option for 3.96% of Johnson County homes.
Cable Providers in Depth
Below you'll find which TV and internet providers offer service in Johnson County, along with details on where in Johnson County and at what speeds.
Mediacom Cable in Johnson County, IA
Mediacom cable coverage
About 89.07%, or 136,145 people, have Mediacom cable internet available to them in the county. The company covers the entire Johnson County area. Mediacom is one of the largest internet service providers internet service providers in the US, with internet service available in most of Johnson County.
Mediacom cable download speeds
Mediacom is above average when comparing download speeds to all other internet providers in Johnson County. Versus other cable providers in the area, Mediacom cable is the fastest. There are no different maximum speeds throughout Johnson County. The fastest plan anyone in Johnson County can order from Mediacom goes up to 1,000 Mbps, and all Johnson County customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Mediacom cable upload speeds
In Johnson County download speeds tend to be faster than than upload speeds for Mediacom cable. Compared to other ISPs, Mediacom is below average where upload speeds are concerned, and the fastest compared to other Johnson County cable providers. Mediacom offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Johnson County is up to 50 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 50.0 Mbps
Johnson County Cable by Area
This information is most helpful to those looking for homes or considering moving to Johnson County or any of the areas nearby.
How does cable internet in Johnson County compare to the rest of Iowa?
Cable internet speeds in Johnson County are much faster versus the average speeds in Iowa: 0.00 Mbps in Iowa versus 1,000 Mbps in the county. The state has similar cable availability compared to the county. Average cable coverage in Iowa is 0.00% versus 89.07% in Johnson County.
What zip codes have cable internet?
Cable internet coverage varies by zip code and neighborhood. Some examples in or around Johnson County are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does cable internet look like in other counties?
Below are counties nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Counties
- Cedar County, IA: less cable coverage, slower speeds
- Iowa County, IA: less cable coverage, similar speeds
- Scott County, IA: more cable coverage, slower speeds
- Poweshiek County, IA: less cable coverage, similar speeds
- Jasper County, IA: less cable coverage, similar speeds
- Whiteside County, IL: less cable coverage, faster speeds
- Polk County, IA: more cable coverage, similar speeds
- Dallas County, IA: more cable coverage, slower speeds
- Guthrie County, IA: less cable coverage, slower speeds
- Kendall County, IL: more cable coverage, faster speeds
Counties with Similar Populations
- Jackson County, MI: less cable coverage, faster speeds
- Rankin County, MS: less cable coverage, faster speeds
- Rensselaer County, NY: more cable coverage, similar speeds
- Santa Fe County, NM: less cable coverage, faster speeds
- Monroe County, MI: more cable coverage, faster speeds
- Alexandria City, VA: more cable coverage, faster speeds
- St. Clair County, MI: less cable coverage, faster speeds
- Stafford County, VA: more cable coverage, faster speeds
- Sullivan County, TN: more cable coverage, faster speeds
- Kings County, CA: less cable coverage, faster speeds